Printing-machine.



' 1. WHITE. PRINTING mom-NE. APPLICATION FILED MAY 5, I9I3.

Patented Apr. 27, 1915.

2 SHEET$SHEET 1.

\NVE

TO R

@4415. Z4%1 o R N W \TNESSE'S M 714/. QM ,Z 411% 1,137,299. Patented Apr. 27, 1915;

2 sHEETS-SHEET 2- H n x 2 Y 9. i Q I 1 1 M! i u. 1 NH 1 a 1 My L x 9- l 5 2 Q I '1 I. I F: WM 'ilm 1. WHITE.

PRINTING MACHINE. APPLICATION FILED MAY 5. 1913.

l I 53 "W illllmfl o in a simple and efficient manner in a JOSEPH WHITE, OF BEECHWOOD HEIGHTS, PISCATAWAY TOWNSHIP, MIDDLESEX COUNTY, NEW JERSEY, ASSIGNOR TO HALL PRINTING PRESS COMPANY, OF

DUNELLEN, NEW JERSEY, A CORPORATION OF NEW JERSEY.

PRINTING-MACHINE.

Specification of Letters Patent.

Patented Apr. 27, 1915.

Application filed May 5, 1913. Serial No. 765,415.

To all whom it may concern:

Be it known that I, JOSEPH \VHITE, a citizen of the United States, residing at Beechwood Heights, Piscataway township. in the county of Middlesex, State of New Jersey, have invented certain new and useful Improvements in Printing-Machines; and I 'do declare the following to be a full, true, and exact description of the said invention, such as will enable others skilled in the art to which it appertains to make use of the same.

My present invention relates particularly to certain forms of printing presses, such as proof and transfer presses, in which the form is usually held stationary while the impression cylinder passes over it, although my invention may be applied to any form of printing machine in which it is desired to bring a cylinder and form into printing contact when traveling relatively to one another in one direction and out of printing contact when moving relatively in the opposite direction. By my present invention I have provided a simple and efficient means for doing this, particularly mechanism by which such movement may be accomplished hand and yet without any paroperated press,

on the part of the operticular effort or care ator of the machine.

In the accompanying drawings, Figure 1 represents a side elevation of the form of press which I have chosen for purposes o illustration, and which in this case, represents a transfer press with two form beds. Fig. 2 represents a plan view of Fig. 1. Fig. 3 represents an enlarged end elevation of the cylinder shown in Fig. 1. Fig. 4 represents a side elevation of Fig. 3 with a portion thereof in section, and a portion broken away.

The corresponding parts are referred to in the specification and drawings by similar reference characters.

In the drawings, 10, 11 represent the two side frames of the machine, properly held apart by the braces 9, the upper portions of which frames are formed to provide tracks on which rolls a cylinder 12, the cylinder 12 being provided with bearers 13 at each end, of the same diameter as the printing diameter of the cylinder 12. To the tracks formed by the top edges of the frames 10, 11 are attached register racks 14, 15 in which mesh register gears 16, 17 attached to the cylinder 12. Between the frames 10, 11 are suspended form beds 18, 19, to which may be attached planographic plates in the usual manner in transfer presses, or, if the press 1s used as a proof press, on which may be placed the forms of which proofs are to be taken. The arrangement so far described is the ordinary one, and no further detail description is necessary to those skilled in the art.

I The cylinder 12, in taking an impression, is rolled over the form and in contact therewith by the'operator pushing on the handle 20 attached to the cylinder 12, and rolling it along the tracks 10 1. To return it to its original position, at the right of Fig. 1, it is desirable to raise cylinder 12 so that it will not contact with the form as it moves from the position shown in Fig. 1 to the right hand end of the machine. As one specific form of my invention for so raising the cylinder, which I have chosen for purposes of illustration, I have shown bearers 21, 22 which have a diameter larger than the bearers'13, 13, and therefore, larger than the printing diameter of the cylinder 12, these bearers being loosely held to the cylinder 12 by bolts 23 passing through slots 24 in the bearers 21, 22, these slots being greater in width than the diameter of the bolts, as is shown particularly in Fig. 3. The interior of each of the bearers 21, 22, is cut away, as shown particularly in Fig. 3, so as to have four concentric portions 25, and four eccentric portions 26, such eccentric portions leading away from the concentric portions 25 in the manner shown in Fig. 3. Attached to the cylinder"12 is a member 27 having four projections 28 thereon, said projections having their exteriors concentric with the center of the cylinder 12. 29, 30 are pins attached to the bearers 21,22, and projecting therefrom. The bearers 21, 22 are held frictionally in their operative and inoperative positions by the pressure of a spring 31 transmitted through a plug 32, "the latter having its end rounded in the well-known manner so that it can be snapped from the depression 33 into the depression 34 in the bearer 21. Each of these depressions are made large enough to permit the relative 11 to the left of Fig.

movement of the bearers 21, 22 with the cylinder 12, hereinafter to be described.

In the position of the parts shown in Fig. 3, the lower edge of the bearer 21 rests on the track 10, and, since the bearer is free to move vertically on the cylinder 12, the position of the cylinder in reference to the track 10 is not affected, the bearer 21 being moved to a position eccentric to the cylinder 12. The slots 24 and the recesses 33 are proportioned so as to permit this, as are also the eccentric portions 26 in relation to the member 27 and its projections 28. With the parts in the position shown in Fig. 3, the cylinder 12 may be rolled along the track 10, being supported by the bear-. ers 13, 13, and while the bearers 21, 22 will be carried by the cylinder, they will be pushed ov the pressure of the track 10 so as to be maintained in the relative positions shown in Fig. 3. 7

If the bearers21, 22 are rotated relatively to the cylinder 12, and therefore, to the member 27, the projections 28 will pass up the eccentric portions 26 of the bearer into the concentric portions 25. If the bearers 21, 22, are restmg on the track 10, this motion will have the effect of lifting the cylinder 12, and its bearer 13 from the track 10, since this motion would place the center of the larger bearers 21, 22 concentric with the cylinder 12. The bearers 21, 22 would then be locked in this concentric position by the contact between the faces of the projections 28, and concentric portions .25, and also by the pin 32 snapping into the recess 34. In-.

stead of rotating the bearers 21, 22, while they are resting on the tracks 10, 11 I prefer to cut away the tracks 10 11, at the point where this rotation takes place, so that the rotation of the bearers 21, 22 has the effect initially of merely centering the bearer on the cylinder 12 without affecting the position of the cylinder in reference to the tracks 10, 11. This permits the turning of the bearers 21, 22 with the minimum amount of eflort, and yet permits the lifting of the cylinder 12, as" it is rolled again toward the right of Fig. 1.

As a preferred means for rotating the bearers 21, 22, I provide brackets 35, 35 and 36, 36 at opposite ends of the press, these brackets being arranged to contact with the pins 29, 30'as the cylinder 12 is rolled toward these brackets. As will be seen by an inspection of Fig. 1, as the cylinder 12 reaches the end of its travel toward the left of Fig. 1, the pins 29 and 30, contacting with the brackets 35, hold the bearers 21, 22 stationary while the cylinder 12 is traveling a short distance. This produces a relative motion between the bearers 21, 22 and the members 27 to move the bearers 21, 22 into their concentric positions. Preferably I cut away the tracks 10, 11 opposite the bearers 21, 22, while they are in this position, so that the bearers may be rotated into concentric position with the minimum effort, as explained above. These cut away portions are shown at 37.

From the foregoing description, it will be understood that, in the position shown in Fig. 1, the impression cylinder has reached the end of its travel toward the left of Fig. 1, and has had its bearers 21, 22 turned into their concentric positions and locked in such relation to the cylinder. Now, as the operator, through the handle 20, rolls the cylinder to the right of Fig. 1, the bearers 21, 22 pass up the inclines leading to the depressions 37 on to the top of the tracks 10, 11. Since the bearers 21, 22 are larger in diameter than the cylinder 12, this has the effect of lifting the impression surface of the cylinder out of position to contact with the form beds 18, 19. As the cylinder 12 reaches the right hand end of its travel, the bearers 21, 22 are again opposite depressions 37 and at the end of its travel the pins 29, 30 contact with the brackets 36, 36, and hold the bearers stationary while the cylinder travels a short distance. This again effects a relative rotation of the bearers 21, 22 and the member 27, permitting the bearers to be moved into their eccentric positions shown in Fig. 3. When the cylinder is now moved to the right, it is in position to contact with the form beds 18, 19.

It will be understood that the movable bearers are merely one of a number of mechanisms which may be used to raise and lower alternately the impression cylinder 12. It will be also understood that while'I prefer to place the brackets 35, 36 at the ends of travel of the cylinder, it is possible to place these brackets at other positions, and even to make them adjustable so that the shifting of the cylinder from printing to non-printing position may be done at any desired point in the travel of the cylinder. It will also be evident that in the specific form which I have illustrated a relative movement between the member 27 and the bearer 21 is all that is required, and that, therefore, the bearer 21 may be attached to the cylinder and the member 27 be made movable around the axis of the cylinder. It will also be understood that while I prefer to duplicate the mechanism on each side of the machine, it is possible to use the shifting mechanism on one end of the cylinder only, in such case, the diameter of the movable bearer being made sufliciently large to lift the cylinder high enough to move every part of it out of contact with any of the printing form.

While I have shown a form of bearer which is concentric with the cylinder when the bearer is locked to the cylinder, it should be understood that it is possible to use a bearer which is not concentric, provided the periphery of the bearer, when in operative osition, be so located as to prevent the cylinder contacting with the forms as the cylinder passes over them.

It should be understood that while I have used the top portions of the frames 10, 11 as tracks on which the cylinder 12 may be rolled, this track may be constituted in any other desired manner, and that when I use the word track, I do not wish to be limited to the specific form which I have disclosed, and that, by such term, I include any suitable means by which the cylinder may be supported as it is rolled along over the form beds l8, 19. It should also be understood that, while I havedescribed my novel mechanism as applied to a press in which the form is stationary and the cylinder travels, the mechanism may be applied also to a ress of the ordinary flat bed type, in which the bed reciprocates and the cylinder rotates in stationary bearings, or indeed to any type of press in which a form bed and a cylinder move relatively to each other.

Having now described my invention, what I claim as new and desire to secure by Letters Patent is as follows 1. In a printing press, a form bed and a cylinder relatively movable lengthwise of said bed, and a-bearer, carried by said cylinder and normally freely movable into and out of concentric relation therewith, and means to move said bearer into concentric relation with said cylinder.

2. In a printing press, a form bed and a cylinder relatively movable lengthwise of said bed, and a bearer, carried by said cylinder and normally freely movable into and out of concentric relation therewith, means to move said bearer into concentric relation with said cylinder, and means to lock said bearer in such concentric relation,

3. In a printing press, a form bed and a cylinder relatively movable lengthwise of said bed, a track, a bearer carried by said cylinder and arranged to travel on said track, said bearer being normally free to move on said cylinder at right angles to said track. and means to lock said bearer to said cylinder.

4. In a printing press, a form bed and a cylinder relatively movable lengthwise of said bed, a track, a bearer carried by said cylinder and arranged to travel on said track, said bearer being normally free to move on said cylinder at right angles to said track, and means to lock said bearer to said cylinder so as to be concentric therewith.

In a printing press, a form bed and a cylinder relatively movable lengthwise of said bed, a track, a bearer carried by said cylinder and arranged to travel on said track, said bearer being normally free to move into and out of concentric relation with said cylinder, and a device on said cylinder constructed and arranged to lock said bearer to said cylinder and concentric therewith.

6. In a printing press, a form bed and a cylinder relatively movable lengthwise of said bed, a track, a bearer carried by said cylinder and arranged to travel on said track, said bearer being normally free to move into and out of concentric relation with said cylinder, a device on said cylinder, said device and said bearer being relatively movable, and said device being constructed and arranged to lock said bearer to said cylinder and concentric therewith, when said bearer and said device are moved relatively to each other, and means to produce such relative motion as said cylinder is moved along said track. I

7. In a printing press, a track, a cylinder movable lengthwise thereof back and forth over a defined portion thereof, a bearer carried by said cylinder and normally free to be moved into and out of concentric relation therewith, means carried by said cylinder to move said bearer into concentric relation with said cylinder, a device to cause said means to become operative as said cylin der reaches one end of its travel, to move said cylinder away from said track, and a device to cause said means to become operative as said cylinder reaches the other end of its travel, to permit said cylinder to move toward said track.

8. In a printing press, a track, a cylinder movable lengthwise thereof back and forth over a defined portion thereof, a bearer carried by said cylinder and arranged to travel on said track, said bearer being larger in diameter than said cylinder and normally free to move on said cylinder at right angles to said track, mechanism on said cylinder, said mechanism and said bearer being relatively movable, and said mechanism being constructed and arranged to lock said bearer to said cylinder and concentric therewith, when said bearer and said mechanism are moved relatively to each other, a device to produce such relative motion as said cylinder reaches one end of its travel, to lock said bearer to said cylinder, and a device to produce such relative motion as said cylinder reaches the other end of its travel, to unlock said bearer.

9. In a printing press, a track, a cylinder movable lengthwise thereof back and forth over a defined portion thereof, a bearer carried by said cylinder and arranged to travel on said track, said bearer being normally free to move on said cylinder into and out of concentric relation therewith, mechanism on said cylinder, said mechanism and said bearer being relatively movable, and said mechanism being constructed and arranged to lock said bearer to said cylinder and concentric therewith, when said bearer and said mechanism are moved relatively to each other, a device to produce such relative I110- tion as said cylinder reaches one end of its travel, to lock said bearer to said cylinder, and a device to produce such relative motion as said cylinder reaches the other end of its travel, to unlock said bearer, said track being cut away at the points Where said locking and unlocking takes place, so that said bearer is out of contact at such points.

JOSEPH WHITE. Witnesses:

PHILIP W. HALL, K. R. MOYNIHAN. 

